From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Horsepower required for the P.2 model to achieve 100 MPH, based on an existing graph and Bentley performance data.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan237 | |
| Date | 2nd June 1931 | |
| HS{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} FROM E.{Mr Elliott - Chief Engineer} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} ["C. to" is crossed out] re. HP. REQUIRED ON P. 2. TO ACCOMPLISH 100 MPH. E4/M2.6.31. [Handwritten]: filed. x7771 We send herewith LeC. 2913. shewing a graph of HP. required for various road speeds developed from a curve given for 10-EX. in HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}/LG301125., which curve appears to increase approximately as road speed to the 2.7 power, neglecting any constants due to tractive resistance, etc. This appears to indicate a HP. within the neighbourhood of 195. to accomplish 100 MPH., but this is of course very approximate. We also shew on this graph the speeds accomplished by the speed 6. and 8 litre Bentleys. We think it would be a useful thing if you could construct a curve of this nature up to the speed shewn more accurately and applicable to the body fitted to our continental model P. 2. Would you kindly return a blueprint of LeC. 2913. for filing purposes. [Handwritten]: Sent by to A ^ E.{Mr Elliott - Chief Engineer} [Signature] | ||